Tributyl phosphate CAS#126-73-8

CAS Number: 126-73-8
Chemical Formula: C12H27O4P
Synonyms:

Phosphoric acid tributyl
Tributyl phosphate 5g [126-73-8]
Tributyl phosphate 10g [126-73-8]

Appearance: Transperant Liquid

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Tributyl phosphate CAS#126-73-8

Tributyl phosphate (126-73-8);is an odorless colorless to yellow liquid. The solubility of TBP is only 280 mg/L in water at 25°C. It is soluble in diethyl ether, benzene, carbon disulfide. It can be miscible with ethanol. It is stable, but it is incompatible with strong oxidizing agents.

Tributyl phosphate (TBP) is an organophosphorus compound widely used as a solvent in nuclear fuel reprocessing for the extraction of uranium and plutonium from other radionuclides.
The major uses of tributyl phosphate (TBP) in industry are as a flame retardant component of aircraft hydraulic fluid and as a solvent for rare earth extraction and purification. Minor uses of TBP include use as a defoamer additive in cement casings for oil wells, as an anti-air entrainment additive for coatings and floor finishes, as a solvent in nuclear fuel processing, and as a carrier for fluorescent dyes.
The microbial degradation of tributyl phosphate was carried out using Klebsiella pneumoniae S3 isolated from the soil. The solubilization behavior of TBP in aqueous solutions of L64-Pluronics was studied using light and small angle neutron scattering (SANS).

Tributyl phosphate Chemical Properties

Melting point	-79 °C (lit.)
Boiling point	180-183 °C/22 mmHg (lit.)
density	0.979 g/mL at 25 °C (lit.)
vapor density	9.2 (vs air)
vapor pressure	27 mm Hg ( 178 °C)
refractive index	n20/D 1.424(lit.)
Fp	380 °F
storage temp.	Store below +30°C.
solubility	water: soluble1ml in 165ml water
form	Liquid
color	Clear
Odor	Odorless
Water Solubility	0.6 g/100 mL
Merck	14,9618
BRN	1710584
Exposure limits	TLV-TWA 2.18 mg/m3 (0.2 ppm) (ACGIH), 5 mg/m3 (OSHA and NIOSH); IDLH 1300 mg/m3 (120 ppm) (NIOSH).
Dielectric constant	6.5（20℃）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents. May be water sensitive.
LogP	4 at 20℃
Surface tension	27.2mN/m at 298.15K
CAS DataBase Reference	126-73-8(CAS DataBase Reference)
NIST Chemistry Reference	Tri-n-butylphosphate(126-73-8)
EPA Substance Registry System	Tributyl phosphate (126-73-8)

Safety Information

Hazard Codes	Xn,F
Risk Statements	22-38-40-62-48/20-36/37/38-11-20/22
Safety Statements	36/37-46-45-36/37/39-16-53
RIDADR	UN 1208 3/PG 2
OEB	B
OEL	TWA: 0.2 ppm (2.5 mg/m3)
WGK Germany	2
RTECS	TC7700000
Autoignition Temperature	770 °F
TSCA	TSCA listed
HS Code	29190010
Hazardous Substances Data	126-73-8(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 3.0 g/kg (Smyth, Carpenter)
IDLA	30 ppm

Product Application of Tributyl phosphate CAS#126-73-8

Tributyl phosphate (TBP,126-73-8) is a trialkyl phosphate that is the tributyl ester of phosphoric acid. TBP is a toxic organophosphorous compound widely used in many industrial applications, including significant usage in nuclear processing. TBP is a solvent and plasticizer for cellulose esters such as nitrocellulose and cellulose acetate. The major uses of TBP in industry are as a component of aircraft hydraulic fluid and as a solvent for extraction and purification of rare earth metals from their ores, such as uranium and plutonium. TBP is used also in mercerizing liquids, where it improves their wetting properties. TBP is also used as a heat exchange medium. TBP is used in some consumer products such as herbicides and water thinned paints and tinting bases.

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